I came across to php framework YII. I haven't used it nor do I know anything more about this. But one thing I found interesting, was the “hello world” benchmark:
http://www.yiiframework.com/performance
The benchmark tool is located:
http://code.google.com/p/phpmark/
Both are developed by the same team.
QCodo could be compared to that. One form with “hello world” label or something. phpmark has a linux script. I'm not running linux myself. Otherwise I'd try it out.